|Publication number||US7338532 B2|
|Application number||US 11/140,669|
|Publication date||Mar 4, 2008|
|Filing date||May 27, 2005|
|Priority date||May 27, 2004|
|Also published as||US20050267600|
|Publication number||11140669, 140669, US 7338532 B2, US 7338532B2, US-B2-7338532, US7338532 B2, US7338532B2|
|Inventors||Louis J Haberman, Laszlo E Dallos|
|Original Assignee||Engineered Silicone Products L.L.C.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (9), Non-Patent Citations (2), Referenced by (18), Classifications (28), Legal Events (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application claims the benefit of U.S. Provisional Application No. 60/575,102, filed on May 27, 2004. The disclosure of the above application is incorporated herein by reference.
Various prosthetic devices for the lower leg are known in the art.
While significant advancements have been made in the field of lower limb prosthetics in recent years, all known devices are associated with certain limitations. In this regard, known modular prosthetic components are generally not suitable for users exceeding 220 pounds. Additionally, known modular prosthetic components do not provide sufficient adjustability to ensure proper alignment and ease of adjustment for higher weight patients. Furthermore, known devices do not suitably provide a modular alignment assembly capable of connecting all known conventional modular components.
Accordingly, a need remains in the art for a prosthetic device which overcomes the limitations associated with the prior art, including but not limited to those limitations discussed above.
The present teachings provide an alignment assembly for a modular prosthesis. The alignment assembly includes a plurality of modular components that can be selectively connected to each other for providing selectively linear adjustability along at least first and second non-parallel axes, and rotational/angular adjustability about three orthogonal axes.
In one aspect, an alignment assembly according to the present teachings can include a base having first and second dovetail slots on opposite surfaces, a plurality of slidable components, each component having a dovetail adjustably receivable in one of the first and second dovetail slots, and a locking mechanism for selectively locking anyone of the slidable components in one of the first and second dovetail slots. The dovetails slots are oriented along first and second non-parallel linear adjustability axes. The locking mechanism can include first and second locking bars defined by corresponding sidewalls of the first and second dovetail slots, and at least one set screw for forcing the corresponding sidewall to lock the slidable component.
Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
The following description of various aspects of the present invention is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
The present teaching provides an alignment assembly that can be installed into a modular prosthesis and can support body weights up to 425 pounds. In other instances, the alignment assembly of the present teachings can be used for pediatric applications for which dynamic loading will be significantly less.
As described below in further detail, the modular alignment assembly can provide translation/linear adjustability in at least two directions. For example, the alignment assembly can provide adjustability in an anterior/posterior (A/P) direction and a medial/lateral direction (M/L). The M/L adjustability permits optimal alignment of a prosthetic socket or limb receptacle to a prosthetic foot and/or prosthetic knee for enhanced stability. The A/P adjustability permits appropriate weight transmission over the foot and/or prosthetic knee at heel strike, mid-stance and toe-off, thereby encouraging a smooth and comfortable gait.
Angular adjustments can be facilitated by selective use of male and female connectors and/or other adapters that can be included in the alignment assembly. Additional components can be used for other rotational adjustments. The connectors and adapters can be used selectively to mate with a variety of other pre-existing female/male modular components, such as tubular clamp adapters, prosthetic knees and feet, shock absorbers, etc. The benefits of offering angular alignment adjustments are well known in the art. Such adjustments are required to orient the prosthetic socket into a position/tilt/angle matching the amputee's naturally occurring femoral or tibial angle. Permitting rotational adjustment is required to place the foot in an appropriate orientation that matches the rotational angle (toe-out) of the sound (remaining) limb. Rotational adjustments are also required to place the prosthetic knee mechanism in an externally rotated position (with respect to the line-of-progression of amputee's ambulation). This default starting position approaches 5 degrees of external rotation. However, small alteration of this rotation is often required to eliminate certain gait deviations present when such rotation is incorrectly set.
With initial reference to the environmental view of
It will be understood that the present teachings are also applicable for other applications, including, for example, an above-knee prosthesis commonly referred to as a trans-femoral prosthesis.
The slidable plate members 22, 24, the slidable male connector 26, the slidable female connector 28, and the rotatable slidable adapters 72, 71, are exemplary slidable components, each of which is adapted for linear adjustability relative to the base 20. Each of these slidable components can be selectively coupled to the base 20 along a first axis A or second axis B, and linearly adjusted relative to the base 20, as described below.
With particular reference to
The top surface 30 of the base 20 can also define a central groove or slot 92 for engaging a corresponding fastener of a slidable component as a safety feature for preventing the slidable component from sliding completely off the base 20 while allowing slidable adjustability. Exemplary fasteners are illustrated as set screws 93 in
With particular reference to
Referring particularly to
The slidable male connector 26 can define a dovetail 50 adapted to be slidably received within one of the dovetail slots 34 or 36 of the base 20. The threadable male connector 26 a can be rotatably connected to the rotatable slidable adapter 71, illustrated in
Each female connector 28, 28 a can include a female extension 62. The female extension 62 is adapted to be attached to other components of a conventional prosthesis. The female extension 62 defines a socket 63 for rotationally receiving the male extension 52 of a component having an inverted pyramid shape, such as the male extensions 52 of the male connectors 26, 26 a, or male extensions of other prosthetic components. The female extension 62 can be provided with four set screws 65 that extend into the socket 63 for engaging the male extension 52. The set screws 65 can be arranged in first and second opposing pairs, such that when the first pair of set screws 65 extends along a first direction the second pair extends at 90 degrees relative to the first pair along a second direction. This type of connection provides adjustability of rotation about any axis, because it provides rotational adjustability about three orthogonal axes, such as, for example axes R1, R2 and R3. Rotational adjustability about axes R2, R3 perpendicular to axis R1 is conventionally referred to as angular adjustability or tilting.
Loosening and tightening of either pair of set screws 65 can tilt the male extension 52 and the components attached above or below the male extension 52 towards the screw 65 being tightened. For example, to change an angle, one screw 65 in the medial/lateral direction is loosened and the other screw 65 media/lateral direction is tightened an equal amount. This action will cause one screw 65 to be placed deeper in its threaded hole than the opposing screw 65. The deeper screw 65 will engage the male extension 52 and tilt it in its direction.
In use, the user selects desired components of the alignment assembly 10 for coupling a given trans-tibial or trans-femoral prosthetic socket 12, and a prosthetic knee and prosthetic foot 14, as illustrated in
It will now be appreciated that the alignment assembly 10 of the present teachings can provide complete three-dimensional adjustability, including translational and rotational/angular adjustability about any axis. For example, the alignment assembly 10 can provide translational or linear adjustment at least in two perpendicular directions. In this regard, the alignment assembly 10 can provide adjustability in the anterior/posterior (A/P) direction and the medial/lateral direction (M/L), as discussed above. Angular adjustments can be facilitated by the use of the male or female connectors 26, 26 a and 28, 28 a. Rotational adjustments can be facilitated by the use of various adapters, such as, for example, adapters 71, 72, 23, illustrated in
The alignment assembly 10 of the present invention may be installed in virtually all new prostheses or retro-fitted into existing endoskeletal (modular) prostheses.
In one particular application, the various components of the alignment assembly 10 can be constructed of titanium, such as, for example grade 5 titanium. Those skilled in the art, however, will appreciate that other materials having suitable strength and durability characteristics may be used within the scope of the present teachings.
The dovetail connections between the components of the alignment assembly 10 enables the alignment assembly 10 to accommodate heavier loads as compared to known constructions because to its titanium construction, larger dovetails and dovetail slots and thicker base 20. In this regard, loads can be safely transferred through the alignment assembly 10 from heel strike to toe-off. Loads up to 425 pounds, for example, can be accommodated.
Throughout the drawings, the base 20 is shown to define a pair of dovetail slots 34, 36 for receiving conforming dovetails of slidable components. It will be readily appreciated that the base 20 can be alternatively be formed to include dovetails and the cooperating slidable components formed to include conforming dovetail slots. Such a variation will be understood to fall clearly within the scope of the present teachings.
As described herein, linear adjustment can be manually accomplished using the locking mechanism 82. An alternative locking mechanism can include set screws threaded through the base 20 for engaging the slidable components directly without bending of an intervening locking bar/sidewall 85. Alternatively, a worm gear (not shown) can be incorporated into the alignment assembly 10 to provide driven adjustability between the base 20 and the various cooperating slidable components. In this regard, the base 20 can be alternatively constructed to include a worm gear disposed parallel to one or both of the axes A and B. The worm gear can threadably engage a rack carried by the cooperating slidable component. In such an arrangement, the need to loosen and tighten set screws for locking can be eliminated. Rather, the threaded engagement between the worm gear and the rack can maintain a desired orientation between the components.
The foregoing discussion discloses and describes merely exemplary arrangements of the present invention. One skilled in the art will readily recognize from such discussion, and from the accompanying drawings and claims, that various changes, modifications and variations can be made therein without departing from the spirit and scope of the invention as defined in the following claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US5464443||May 3, 1993||Nov 7, 1995||Rik Medical, L.L.C.||Prosthetic device for amputees|
|US5549710 *||Jan 28, 1994||Aug 27, 1996||Etablissements Proteor||System for assembling two components of a prosthesis in a plurality of adjustable positions|
|US5800565||Apr 27, 1995||Sep 1, 1998||Biedermann Motech Gmbh||Leg prosthesis with quick exchange and displacement adjustment connections|
|US6398818||Jul 2, 1999||Jun 4, 2002||Crp, Inc.||Lower leg prosthesis|
|US6458163 *||Jul 11, 2000||Oct 1, 2002||Prosthetic Design, Inc.||Coupling-socket adapter assembly for a prosthetic limb|
|US6488717||Aug 24, 2001||Dec 3, 2002||Mccoll Mack Edward||Prosthetic leg|
|US6692533||Oct 4, 2001||Feb 17, 2004||College Park Industries, Inc.||Exoskeletal leg prosthesis and method for alignment|
|US6712860||Feb 9, 2001||Mar 30, 2004||Otto Bock Healthcare Lp||Lower leg prosthesis|
|US20040059433 *||Sep 20, 2002||Mar 25, 2004||Slemker Tracy C.||Prosthetic knee-joint assembly including adjustable proximal and/or distal couplings|
|1||*||Hosmer Spectrum Alignment System, dated Jun. 4, 2003 by the Internet Archive Wayback Machine, 3 pages.|
|2||*||Spectrum Alignment System, pp. H127-H132.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7972380 *||Sep 17, 2008||Jul 5, 2011||Linares Medical Devices, Llc||Artificial joint support between first and second bones|
|US8083807 *||Oct 25, 2006||Dec 27, 2011||Otto Bock Healthcare Gmbh||Method for adjusting a leg prosthesis and verifying the adjustment, and apparatus for the measurement of forces or moments in a leg prosthesis|
|US8910534 *||Apr 25, 2012||Dec 16, 2014||Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd.||Rotation adjusting mechanism and adjusting machine using the same|
|US9468542||Jun 20, 2014||Oct 18, 2016||Lim Innovations, Inc.||Prosthetic socket and socket liner with moisture management capability|
|US9468543||Sep 16, 2015||Oct 18, 2016||Lim Innovations, Inc.||Modular prosthetic sockets and methods for making same|
|US9474633||May 4, 2015||Oct 25, 2016||Lim Innovations, Inc.||Alignable coupling assembly for connecting two prosthetic limb components|
|US9549828||Jul 13, 2015||Jan 24, 2017||Lim Innovations, Inc.||Modular prosthetic sockets and methods for making same|
|US9737420||Dec 22, 2015||Aug 22, 2017||Ossur Hf||Alignment adapter for prosthetic sport feet|
|US20080288086 *||Oct 25, 2006||Nov 20, 2008||Roland Auberger||Method for Adjusting a Leg Prosthesis and Verifying the Adjustment, and Apparatus for the Measurement of Forces or Moments in a Leg Prosthesis|
|US20090076605 *||Sep 17, 2008||Mar 19, 2009||Linares Medical Devices, Llc||Artificial joint support between first and second bones|
|US20130145870 *||Apr 25, 2012||Jun 13, 2013||Hon Hai Precision Industry Co., Ltd.||Rotation adjusting mechanism and adjusting machine using the same|
|US20140294498 *||Apr 2, 2013||Oct 2, 2014||William Robert Logan||Furniture component joining system|
|USD733884 *||Nov 12, 2012||Jul 7, 2015||Otto Bock Healthcare Gmbh||Adjustable adapter|
|USD746463 *||Jan 29, 2015||Dec 29, 2015||Bulldog Tools, Inc.||Offset prosthetic adaptor|
|DE102012009601A1 *||May 15, 2012||Nov 21, 2013||Michael Winkler||Single-axis knee joint for lower extremity exoskeleton, is provided for left side or right side of leg, while articulated frame and joint head with lateral offset is designed for left leg or right leg|
|DE102012012173A1 *||Jun 19, 2012||Dec 19, 2013||Spörer AG||Adjusting device for adjusting articulated axle position of prosthesis knee joint relative to thigh shaft of leg prosthesis in patient, has carriage part held along guide and fixed in adjusting positions, where shaft is attached at part|
|DE102012012173B4 *||Jun 19, 2012||Mar 13, 2014||Spörer AG||Vorrichtung zum Einstellen einer Beinprothese und Verfahren zum Erstellen einer derartigen Vorrichtung|
|DE102012013481A1||Jul 9, 2012||May 8, 2014||Otto Bock Healthcare Gmbh||Device for aligning prosthesis knee joint of patient, has first retainer arranged on thigh shaft, second retainer arranged on prosthesis knee joint, and curved path provided in first retainer|
|International Classification||A61F2/50, A61F2/76, F16B7/00, F16M11/04, A61F2/00, A61F2/80, A61F2/62|
|Cooperative Classification||F16M2200/027, A61F2/76, A61F2002/30512, A61F2002/3051, Y10T403/7094, F16M11/2085, A61F2220/0025, A61F2220/0033, A61F2002/30387, A61F2002/5023, A61F2220/0041, A61F2002/30359, F16M11/2092, A61F2002/30434, F16M11/041|
|European Classification||F16M11/04A, F16M11/20C, F16M11/20B, A61F2/76, F16M11/04|
|May 27, 2005||AS||Assignment|
Owner name: ENGINEERED SILICONE PRODUCTS, LLC, NEW JERSEY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HABERMAN, LOUIS J.;DALLOS, LASZLO E.;REEL/FRAME:016642/0490
Effective date: 20050523
|Oct 17, 2011||REMI||Maintenance fee reminder mailed|
|Mar 4, 2012||LAPS||Lapse for failure to pay maintenance fees|
|Apr 24, 2012||FP||Expired due to failure to pay maintenance fee|
Effective date: 20120304
|Sep 19, 2017||FEPP|
Free format text: PETITION RELATED TO MAINTENANCE FEES FILED (ORIGINAL EVENT CODE: PMFP)